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Re: GM Nox/Negative Backpressure EGR Smog Failure
Posted to Technical Discussion Forum on 11/6/1999 4 Replies

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Hi Scott,

This is the correct valve for the car, verified this with the Dealer.

[...trimmed text...]

Yup. Left that out of the post. 10 to 15 inches of vacuu... Login to read more.

4 Replies Received (View Replies)